Evolution of Unix course

jupyterhub_volumes/course/unix.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Unix Essentials — Bash Exercises\n",
+    "\n",
+    "This notebook contains short hands-on Bash exercises.\n",
+    "Each exercise has a hidden solution that can be unfolded when needed."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Exercise 1 – Listing and Filtering Files\n",
+    "\n",
+    "Create three files and list only those whose name ends with `.log`."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# your work here\n",
+    "touch report.log notes.txt errors.log\n",
+    "# list files ending with .log"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "jupyter": {
+     "source_hidden": true,
+     "outputs_hidden": true
+    }
+   },
+   "outputs": [],
+   "source": [
+    "# Solution\n",
+    "ls *.log"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Exercise 2 – Redirecting Output\n",
+    "\n",
+    "List the `/etc` directory and save the results in a file named `listing.txt`, then display the first five lines of that file."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# your work here\n",
+    "# 1. list /etc\n",
+    "# 2. redirect output to listing.txt\n",
+    "# 3. show first five lines"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "jupyter": {
+     "source_hidden": true,
+     "outputs_hidden": true
+    }
+   },
+   "outputs": [],
+   "source": [
+    "# Solution\n",
+    "ls /etc > listing.txt\n",
+    "head -5 listing.txt"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Exercise 3 – Using a For Loop\n",
+    "\n",
+    "Write a loop that prints the line count of each `.txt` file in the current directory."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# your work here\n",
+    "# hint: use wc -l"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "jupyter": {
+     "source_hidden": true,
+     "outputs_hidden": true
+    }
+   },
+   "outputs": [],
+   "source": [
+    "# Solution\n",
+    "for f in *.txt; do\n",
+    "  echo \"$f: $(wc -l < \"$f\") lines\"\n",
+    "done"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "---\n",
+    "All solutions are hidden by default (`source_hidden: true`). Students can unfold them in Jupyter’s interface to compare with their own answers."
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Bash",
+   "language": "bash",
+   "name": "bash"
+  },
+  "language_info": {
+   "name": "bash"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}